Still a good reason for everyone to GTFO. Not worth breaking your neck over, but it's not good to put humans under the stress of a low-oxygen environment when they could be evacuated.
That's an important caveat, given how the danger was apparently greatly exaggerated.
If you've been told that the system will
> somehow suck all of the oxygen out, and if we were still inside we'd be dead
then what are you going to do in a real fire situation, when you're not in imminent danger but your escape route is blocked by flames? Better to brave the fire (or jump out a window) than submit to death by suffocation...
